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person · Reporting owner

Heller Casey

Disclosed activity across 1 company

Tapewire entity
1539
SEC CIK
0002052043

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Definitive Healthcare Corp.DH · Entity 1538Chief Financial OfficerOctober 01, 2026October 05, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Definitive Healthcare Corp.

Report date October 01, 2026 · Filed October 05, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Class A Common StockSEC Table I · non-derivativeDirect1,785,960 Reported balance After 2026-10-01 transaction · row 1
1 source row

Row 1 · 2026-10-01 · Tax withholding · Disposed 12,542 · Balance 1,785,960

F1: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported RSUs.

Filing footnotes · ownership attribution and instrument terms

F1: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported RSUs.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
October 01, 2026 Filed Oct 5, 2026 20:05 UTC Definitive Healthcare Corp. DH · Entity 1538 Tax withholdingClass A Common Stock 12,542 $0.94 $11,740.57
Disclosure

SEC source: 0001193125-26-414095 · ownership.xml · nonDerivative · entry 1

Heller Casey · CIK 0002052043 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,785,960

F1 · shares: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported RSUs.

Read SEC document
September 01, 2026 Filed Sep 3, 2026 20:05 UTC Definitive Healthcare Corp. DH · Entity 1538 Tax withholdingClass A Common Stock 41,093 $0.90 $37,078.21
Disclosure

SEC source: 0001193125-26-381870 · ownership.xml · nonDerivative · entry 1

Heller Casey · CIK 0002052043 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,798,502

F1 · shares: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported RSUs.

Read SEC document
August 01, 2026 Filed Aug 4, 2026 20:05 UTC Definitive Healthcare Corp. DH · Entity 1538 Tax withholdingClass A Common Stock 1,881 $0.68 $1,283.41
Disclosure

SEC source: 0001193125-26-332755 · ownership.xml · nonDerivative · entry 1

Heller Casey · CIK 0002052043 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,839,595

F1 · shares: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported RSUs.

Read SEC document
June 01, 2026 Filed Jun 3, 2026 20:05 UTC Definitive Healthcare Corp. DH · Entity 1538 Tax withholdingClass A Common Stock 164,377 $0.99 $162,733.23
Disclosure

SEC source: 0001193125-26-255409 · ownership.xml · nonDerivative · entry 1

Heller Casey · CIK 0002052043 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,841,476

F1 · shares: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported RSUs.

Read SEC document
May 01, 2026 Filed May 5, 2026 20:05 UTC Definitive Healthcare Corp. DH · Entity 1538 Tax withholdingClass A Common Stock 1,469 $0.99 $1,454.31
Disclosure

SEC source: 0001193125-26-206349 · ownership.xml · nonDerivative · entry 1

Heller Casey · CIK 0002052043 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,005,853

F1 · shares: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported RSUs.

Read SEC document
February 24, 2026 Filed Feb 26, 2026 21:54 UTC Definitive Healthcare Corp. DH · Entity 1538 GrantClass A Common Stock 733,301 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-077194 · ownership.xml · nonDerivative · entry 1

Heller Casey · CIK 0002052043 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,007,322

F1 · shares: Represents restricted stock units ("RSUs"), each representing a contingent right to receive one share of the Issuer's Class A Common Stock, par value $0.001, with 25% of the RSUs vesting on March 1, 2027, followed by vesting of 6.25% every three months thereafter over the subsequent three years, subject to the Reporting Person's continued service with the Issuer through each such vesting date.

Read SEC document
February 01, 2026 Filed Feb 3, 2026 21:05 UTC Definitive Healthcare Corp. DH · Entity 1538 Tax withholdingClass A Common Stock 1,469 $2.32 $3,408.08
Disclosure

SEC source: 0001193125-26-035486 · ownership.xml · nonDerivative · entry 1

Heller Casey · CIK 0002052043 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,274,021

F1 · kind: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of previously reported RSUs.

Read SEC document
January 05, 2026 Filed Jan 7, 2026 21:05 UTC Definitive Healthcare Corp. DH · Entity 1538 GrantClass A Common Stock 195,313 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-006286 · ownership.xml · nonDerivative · entry 1

Heller Casey · CIK 0002052043 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,275,490

F1 · shares: Represents restricted stock units ("RSUs"), each representing a contingent right to receive one share of the Issuer's Class A Common Stock, par value $0.001 (the "Class A Common Stock"), with 50% of the RSUs vesting on January 1, 2027, followed by vesting in equal quarterly installments over the remaining 12 months thereafter, subject to the Reporting Person's continued service with the Issuer through each such vesting date.

Read SEC document
November 01, 2025 Filed Nov 4, 2025 21:03 UTC Definitive Healthcare Corp. DH · Entity 1538 Tax withholdingClass A Common Stock 1,244 $2.77 $3,445.88
Disclosure

SEC source: 0001193125-25-264633 · ownership.xml · nonDerivative · entry 1

Heller Casey · CIK 0002052043 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,080,177

F1 · kind: Represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units.

Read SEC document
October 01, 2025 Filed Oct 3, 2025 12:23 UTC Definitive Healthcare Corp. DH · Entity 1538 Tax withholdingClass A Common Stock 8,300 $3.56 $29,548.00
Disclosure

SEC source: 0001193125-25-229270 · ownership.xml · nonDerivative · entry 1

Heller Casey · CIK 0002052043 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,081,421

F1 · kind: Represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units.

Read SEC document
August 01, 2025 Filed Aug 5, 2025 22:30 UTC Definitive Healthcare Corp. DH · Entity 1538 Tax withholdingClass A Common Stock 1,244 $3.74 $4,652.56
Disclosure

SEC source: 0001415889-25-021086 · form4-08052025_100859.xml · nonDerivative · entry 1

Heller Casey · CIK 0002052043 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,089,721

F1 · kind: Represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of previously reported restricted stock units.

Read SEC document
June 10, 2025 Filed Jun 11, 2025 20:30 UTC Definitive Healthcare Corp. DH · Entity 1538 GrantClass A Common Stock 485,881 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-016677 · form4-06112025_040617.xml · nonDerivative · entry 1

Heller Casey · CIK 0002052043 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,090,965

F1 · shares: Represents restricted stock units ("RSUs"), each representing a contingent right to receive one share of the Issuer's Class A Common Stock, par value $0.001 (the "Class A Common Stock"), with 25% of the RSUs vesting on June 1, 2026, followed by vesting of 6.25% every three months thereafter over the subsequent three years, subject to the Reporting Person's continued service with the Issuer through each such vesting date.

Read SEC document
June 02, 2025 Filed Jun 4, 2025 20:25 UTC Definitive Healthcare Corp. DH · Entity 1538 GrantClass A Common Stock 498,339 $0.00 $0.00
Disclosure

SEC source: 0001415889-25-015595 · form4-06042025_080658.xml · nonDerivative · entry 1

Heller Casey · CIK 0002052043 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 605,084

F1 · shares: Represents restricted stock units ("RSUs"), each representing a contingent right to receive one share of the Issuer's Class A Common Stock, par value $0.001, with 50% of the RSUs vesting on June 1, 2026, followed by vesting of 12.5% every three months thereafter over the subsequent twelve months, subject to the Reporting Person's continued service with the Issuer through each such vesting date.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.